Molecular Oxygen in the Nearest QSO Mrk 231
Wang,Junzhi1,2; Li,Di3,4; Goldsmith,Paul F.5; Zhang,Zhi-Yu6,7,8; Gao,Yu2,9,10; Shi,Yong8; Li,Shanghuo1,2; Fang,Min11; Li,Juan1,2; Zhang,Jiangshui12
Source PublicationThe Astrophysical Journal
AbstractAbstract We report the detection of an emission feature at the 12σ level with FWHM line width of about 450 km s?1 toward the nearest quasi-stellar object, QSO Mrk 231. Based on observations with the IRAM 30 m telescope and the Northern Extended Millimeter Array Interferometer, the 11–10 transition of molecular oxygen is the likely origin of the line with rest frequency close to 118.75 GHz. The velocity of the O2 emission in Mrk 231 coincides with the red wing seen in CO emission, suggesting that it is associated with the outflowing molecular gas, located mainly at about 10 kpc away from the central active galactic nucleus (AGN). This first detection of extragalactic molecular oxygen provides an ideal tool to study AGN-driven molecular outflows on dynamic timescales of tens of megayears. O2 may be a significant coolant for molecular gas in such regions affected by AGN-driven outflows. New astrochemical models are needed to explain the implied high molecular oxygen abundance in such regions several kiloparsecs away from the center of galaxies.
KeywordInterstellar medium Quasars
WOS IDIOP:0004-637X-889-2-ab612d
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 People's Republic of China;
2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China
3.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
5.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
6.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
7.ESO, Karl Schwarzschild Strasse 2, D-85748 Garching, Munich, Germany
8.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China
9.Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, People's Republic of China
10.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People's Republic of China
11.Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
12.Center For Astrophysics, Guangzhou University, Guangzhou 510006, People's Republic of China
Recommended Citation
GB/T 7714
Wang,Junzhi,Li,Di,Goldsmith,Paul F.,et al. Molecular Oxygen in the Nearest QSO Mrk 231[J]. The Astrophysical Journal,2020,889(2).
APA Wang,Junzhi.,Li,Di.,Goldsmith,Paul F..,Zhang,Zhi-Yu.,Gao,Yu.,...&Zhang,Jiangshui.(2020).Molecular Oxygen in the Nearest QSO Mrk 231.The Astrophysical Journal,889(2).
MLA Wang,Junzhi,et al."Molecular Oxygen in the Nearest QSO Mrk 231".The Astrophysical Journal 889.2(2020).
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